[petsc-users] Configure Mumps with 64-bit integers

[Matthew Knepley]

This should be sent to the MUMPS list. So far we did not see a way to tell
them
about the integer type. They might say they rely on Fortran to do it, but
we can't
since that is unreliable from configure.

  Thanks,

     Matt

On Thu, Nov 22, 2018 at 3:41 AM Najib Alia via petsc-users <
petsc-users at mcs.anl.gov> wrote:

> Hello,
>
> I am getting an "INFOG(1) = -51 integer overflow" error from Mumps
> because the linear system I am solving is very big. I have tried to
> configure Mumps in a full 64-bit integer version using
>
> ===============================================
>
> ./configure --with-64-bit-indices --with-cc=gcc --with-cxx=g++
> --with-fc=gfortran --with-debugging=0 COPTFLAGS='-O3 -march=native
> -mtune=native' CXXOPTFLAGS='-O3 -march=native -mtune=native'
> FOPTFLAGS='-O3 -march=native -mtune=native' --download-fblaslapack
> --download-openmpi --download-scalapack --download-mumps
> --download-metis --download-suitesparse --download-parmetis
>
> ===============================================
>
> but I obtain the following error:
>
>
> *******************************************************************************
> UNABLE to CONFIGURE with GIVEN OPTIONS    (see configure.log for details):
>
> -------------------------------------------------------------------------------
> Cannot use MUMPS with 64 bit integers, it is not coded for this capability
>
> *******************************************************************************
>
> Is there a way to use Mumps with 64-bit integers through Petsc? or to
> use the "selective 64-bit integer feature"?
>
> Thank you ahead.
>
> Alia
>


-- 
What most experimenters take for granted before they begin their
experiments is infinitely more interesting than any results to which their
experiments lead.
-- Norbert Wiener

https://www.cse.buffalo.edu/~knepley/ <http://www.cse.buffalo.edu/~knepley/>
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